If I focus on it then I'm sure I'll notice it, just don't focus on it and enjoy playing the game, when you're sitting further away like you do from a TV it isn't something you'll notice as much any ways. 15ms is what the TV benchmarks in game mode on an average, not peak, which tbh is better than most monitors. All the time they advertise 2ms, but that's always a peak, then in reality it's more 20-40ms... I think on a 60hrz panel you only need around 16ms to not have ghosting and on a 120hrz monitor you need around 8ms on average. You get more input lag most probably from your controller, your internet or even yourself and how long it takes to decide on your actions.